LTC1473LCGN Linear Technology, LTC1473LCGN Datasheet - Page 11

• Manufacturer Part Number: LTC1473LCGN
• Description: IC SWITCH DVR PWRPATH DUAL16SSOP
• Manufacturer: Linear Technology
• Series: PowerPath™r

Specifications of LTC1473LCGN

• Applications: Handheld/Mobile Devices
• Fet Type: N-Channel
• Number Of Outputs: 2
• Internal Switch(s): No
• Delay Time - On: 22µs
• Delay Time - Off: 1µs
• Voltage - Supply: 2.8 V ~ 9 V
• Current - Supply: 100µA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP
• Power Switch Family: LTC1473L
• Mounting: Surface Mount
• Supply Current: 100uA
• Package Type: SSOP N
• Operating Temperature (min): 0C
• Operating Temperature (max): 70C
• Operating Temperature Classification: Commercial
• Pin Count: 16
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

APPLICATIO S I FOR ATIO
V
The V
cantly higher than either of the two main power source
voltages to allow the control of N-channel MOSFET
switches. This micropower, step-up voltage regulator is
powered by the higher potential available from the two
main power sources for maximum regulator efficiency.
GG
Regulator Inductor and Capacitors
GG
regulator provides a power supply voltage signifi-
U
U
*COILCRAFT 1812LS-105 XKBC. [phone]
W
LTC1473L
DRIVERS
TO GATE
Figure 5. V
REGULATOR
SWITCHING
U
V
(8.5V + V
GG
GG
Step-Up Switching Regulator
+
)
Three external components are required by the V
lator: L1, C1 and C2, as shown in Figure 5.
L1 is a small, low current, 1mH surface mount inductor. C1
provides filtering to the input of the 1mH switched induc-
tor and should be at least 1 F to filter switching transients.
The V
ing for the V
for 25V operation. C1 and C2 can be ceramic capacitors.
V
SW
GND
V
GG
+
GG
DCIN
output capacitor, C2, provides storage and filter-
L1*
1mH
BAT1
GG
C2
1 F
25V
output and should be at least 1 F and rated
1473 F05
C1
1 F
25V
LTC1473L
GG
11
regu-